A flamingo at Miller Park Zoo in Bloomington, Illinois, was euthanized after it was struck by a rock, WMBD reported. Its leg was broken in the incident.

“A juvenile guest accidentally injured a flamingo on Monday by skipping a rock into the habitat,” Zoo Superintendent Jay Tetzloff said in a statement to The Pantagraph. “Unfortunately, staff determined the best course of action given the animal’s injuries was to euthanize the bird.”